From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: violetc <58360096+s-yh-china@users.noreply.github.com>
Date: Sat, 30 Oct 2021 21:07:43 +0800
Subject: [PATCH] Fix gravity block duper


diff --git a/src/main/java/net/minecraft/world/entity/Entity.java b/src/main/java/net/minecraft/world/entity/Entity.java
index 75d5e255bb166d2ec7325b16e8e5a30b43855276..1bd585630940b2678bd1d9c3c344c17deb461c03 100644
--- a/src/main/java/net/minecraft/world/entity/Entity.java
+++ b/src/main/java/net/minecraft/world/entity/Entity.java
@@ -440,6 +440,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
         return this.originWorld;
     }
     // Paper end - Entity origin API
+    /* Leaves - fix gravity block duper
     // Paper start - make end portalling safe
     public BlockPos portalBlock;
     public ServerLevel portalWorld;
@@ -470,6 +471,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
         this.teleportTo(worldserver, null);
     }
     // Paper end - make end portalling safe
+     */
     // Paper start - optimise entity tracking
     final org.spigotmc.TrackingRange.TrackingRangeType trackingRangeType = org.spigotmc.TrackingRange.getTrackingRangeType(this);
 
@@ -3183,7 +3185,7 @@ public abstract class Entity implements Nameable, EntityAccess, CommandSource, S
             }
 
             this.processPortalCooldown();
-            this.tickEndPortal(); // Paper - make end portalling safe
+			// Leaves - fix gravity block duper
         }
     }
 
diff --git a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
index 05b77bf1af82397c542fde19b54ee545448ce12e..c753bc1a3369827d8ef4705e313f744f07759e40 100644
--- a/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
+++ b/src/main/java/net/minecraft/world/entity/item/FallingBlockEntity.java
@@ -132,11 +132,7 @@ public class FallingBlockEntity extends Entity {
 
     @Override
     public void tick() {
-        // Paper start - fix sand duping
-        if (this.isRemoved()) {
-            return;
-        }
-        // Paper end - fix sand duping
+		// Leaves - fix gravity block duper
         if (this.blockState.isAir()) {
             this.discard();
         } else {
@@ -148,12 +144,14 @@ public class FallingBlockEntity extends Entity {
             }
 
             this.move(MoverType.SELF, this.getDeltaMovement());
+            /* // Leaves - fix gravity block duper
             // Paper start - fix sand duping
             if (this.isRemoved()) {
                 return;
             }
             // Paper end - fix sand duping
-            // Paper start - Configurable falling blocks height nerf
+            */
+            // Paper start - Configurable EntityFallingBlock height nerf
             if (this.level().paperConfig().fixes.fallingBlockHeightNerf.test(v -> this.getY() > v)) {
                 if (this.dropItem && this.level().getGameRules().getBoolean(GameRules.RULE_DOENTITYDROPS)) {
                     this.spawnAtLocation(block);
diff --git a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
index a0c1db8cfebaa0344012cc0af18d6231cdcdcbb8..6482c2456d9dc9b4983f691f388b7ec045d2cab6 100644
--- a/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
+++ b/src/main/java/net/minecraft/world/level/block/EndPortalBlock.java
@@ -61,12 +61,19 @@ public class EndPortalBlock extends BaseEntityBlock {
                 // return; // CraftBukkit - always fire event in case plugins wish to change it
             }
 
-            // Paper start - move all of this logic into portal tick
-            entity.portalWorld = ((ServerLevel)world);
-            entity.portalBlock = pos.immutable();
-            // Paper end - move all of this logic into portal tick
-        }
+            // Leaves start - fix gravity block duper
+            // CraftBukkit start - Entity in portal
+            EntityPortalEnterEvent event = new EntityPortalEnterEvent(entity.getBukkitEntity(), new org.bukkit.Location(world.getWorld(), pos.getX(), pos.getY(), pos.getZ()));
+            world.getCraftServer().getPluginManager().callEvent(event);
 
+            if (entity instanceof ServerPlayer) {
+                ((ServerPlayer) entity).changeDimension(worldserver, PlayerTeleportEvent.TeleportCause.END_PORTAL);
+                return;
+            }
+            // CraftBukkit end
+            entity.changeDimension(worldserver);
+            // Leaves end - fix gravity block duper
+        }
     }
 
     @Override